diff --git a/package.json b/package.json
index 9d6c4b5..9b5516a 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "dependencies": {
     "bl": "^0.9.0",
     "end-of-stream": "^1.0.0",
-    "readable-stream": "^1.0.33",
+    "readable-stream": "~1.0.33",
     "xtend": "^4.0.0"
   },
   "devDependencies": {